/* $OpenBSD: wsemul_vt100_chars.c,v 1.4 2004/04/02 04:39:51 deraadt Exp $ */
/* $NetBSD: wsemul_vt100_chars.c,v 1.4 1999/02/20 18:20:02 drochner Exp $ */

/*
 * Copyright (c) 1998
 *	Matthias Drochner.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsksymvar.h>
#include <dev/wscons/wsemulvar.h>
#include <dev/wscons/wsemul_vt100var.h>
#include <dev/wscons/unicode.h>

static const u_int16_t decspcgr2uni[128] = {
	0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
	0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
	0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
	0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
/* 2 */	0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
	0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f,
	0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
	0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
/* 4 */	0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
	0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
	0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
	0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x00a0,
/* 6 */	0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
	_e006U, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, _e001U,
	_e002U, _e003U, _e004U, _e005U, 0x251c, 0x2524, 0x2534, 0x252c,
	0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x007f,
};

static const u_int16_t dectech2uni[128] = {
	0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
	0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
	0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
	0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
/* 2 */	0x0020, 0x221a, 0x250c, 0x2212, 0x2320, 0x2321, 0x2502, 0x2308,
	0x230a, 0x2309, 0x230b, _e007U, _e008U, _e009U, _e00aU, _e00bU,
	_e00cU, _e00dU, _e00eU, 0x2216, 0x2215, 0x00ac, _e00fU, 0x232a,
	_e000U, _e000U, _e000U, _e000U, 0x2264, 0x2260, 0x2265, 0x222b,
/* 4 */	0x2234, 0x221d, 0x221e, 0x00f7, 0x2206, 0x2207, 0x03a6, 0x0393,
	0x223c, 0x2243, 0x0398, 0x00d7, 0x039b, 0x21d4, 0x21d2, 0x2261,
	0x03a0, 0x03a8, _e000U, 0x03a3, _e000U, _e000U, 0x221a, 0x03a9,
	0x039e, 0x03a5, 0x2282, 0x2283, 0x2229, 0x222a, 0x2227, 0x2228,
/* 6 */	0x00ac, 0x03b1, 0x03b2, 0x03c7, 0x03b4, 0x03b5, 0x03c6, 0x03b3,
	0x03b7, 0x03b9, 0x03b8, 0x03ba, 0x03bb, _e000U, 0x03bd, 0x2202,
	0x03c0, 0x03c8, 0x03c1, 0x03c3, 0x03c4, _e000U, 0x0192, 0x03c9,
	0x03be, 0x03c5, 0x03b6, 0x2190, 0x2191, 0x2192, 0x2193, 0x007f,
};

void
vt100_initchartables(edp)
	struct wsemul_vt100_emuldata *edp;
{
	int i;

	if (edp->isolatin1tab != NULL)
		for (i = 0; i < 128; i++)
			(*edp->emulops->mapchar)(edp->emulcookie, 128 + i,
			    &edp->isolatin1tab[i]);

	if (edp->decgraphtab != NULL)
		for (i = 0; i < 128; i++)
			(*edp->emulops->mapchar)(edp->emulcookie,
			    decspcgr2uni[i], &edp->decgraphtab[i]);

	if (edp->dectechtab != NULL)
		for (i = 0; i < 128; i++)
			(*edp->emulops->mapchar)(edp->emulcookie,
			    dectech2uni[i], &edp->dectechtab[i]);

	vt100_setnrc(edp, 0);
}

static const int nrcovlpos[12] = {
    0x23, 0x40, 0x5b, 0x5c, 0x5d, 0x5e,	/* #@[\]^ */
    0x5f, 0x60, 0x7b, 0x7c, 0x7d, 0x7e	/* _`{|}~ */
};
static const struct {
	u_int16_t c[12];
} nrctable[] = {
	/* british */
	{{0x00a3, 0x0040, 0x005b, 0x005c, 0x005d, 0x005e,
	0x005f, 0x0060, 0x007b, 0x007c, 0x007d, 0x007e}},
	/* dutch */
	{{0x00a3, 0x00be, 0x00dc, 0x00ab, 0x007c, 0x005e,
	0x005f, 0x0060, 0x00a8, 0x0192, 0x00bc, 0x00b4}},
	/* finnish */
	{{0x0023, 0x0040, 0x00c4, 0x00d6, 0x00c5, 0x00dc,
	0x005f, 0x00e9, 0x00e4, 0x00f6, 0x00e5, 0x00fc}},
	/* french */
	{{0x00a3, 0x00e0, 0x00b0, 0x00e7, 0x00a7, 0x005e,
	0x005f, 0x0060, 0x00e9, 0x00f9, 0x00e8, 0x00a8}},
	/* french canadian */
	{{0x0023, 0x00e0, 0x00e2, 0x00e7, 0x00ea, 0x00ee,
	0x005f, 0x00f4, 0x00e9, 0x00f9, 0x00e8, 0x00fb}},
	/* german */
	{{0x0023, 0x00a7, 0x00c4, 0x00d6, 0x00dc, 0x005e,
	0x005f, 0x0060, 0x00e4, 0x00f6, 0x00fc, 0x00df}},
	/* italian */
	{{0x00a3, 0x00a7, 0x00b0, 0x00e7, 0x00e9, 0x005e,
	0x005f, 0x00f9, 0x00e0, 0x00f2, 0x00e8, 0x00ec}},
	/* norwegian /danish */
	{{0x0023, 0x0040, 0x00c6, 0x00d8, 0x00c5, 0x005e,
	0x005f, 0x0060, 0x00e6, 0x00f8, 0x00e5, 0x007e}},
	/* portugese */
	{{0x0023, 0x0040, 0x00c3, 0x00c7, 0x00d5, 0x005e,
	0x005f, 0x0060, 0x00e3, 0x00e7, 0x00f5, 0x007e}},
	/* spanish */
	{{0x00a3, 0x00a7, 0x00a1, 0x00d1, 0x00bf, 0x005e,
	0x005f, 0x0060, 0x0060, 0x00b0, 0x00f1, 0x00e7}},
	/* swedish */
	{{0x0023, 0x00c9, 0x00c4, 0x00d6, 0x00c5, 0x00dc,
	0x005f, 0x00e9, 0x00e4, 0x00f6, 0x00e5, 0x00fc}},
	/* swiss */
	{{0x00f9, 0x00e0, 0x00e9, 0x00e7, 0x00ea, 0x00ee,
	0x00e8, 0x00f4, 0x00e4, 0x00f6, 0x00fc, 0x00fb}},
};

int
vt100_setnrc(edp, nrc)
	struct wsemul_vt100_emuldata *edp;
	int nrc;
{
	int i;

	if (edp->nrctab == NULL)
		return (0);

	if (nrc < 0 || nrc >= sizeof(nrctable) / sizeof(nrctable[0]))
		return (ERANGE);

	for (i = 0; i < 128; i++)
		(*edp->emulops->mapchar)(edp->emulcookie, i, &edp->nrctab[i]);
	for (i = 0; i < 12; i++)
		(*edp->emulops->mapchar)(edp->emulcookie, nrctable[nrc].c[i],
		    &edp->nrctab[nrcovlpos[i]]);

	return (0);
}
